Stockholders' Equity - Outstanding Options Granted to Consultants for Sales and Pre-marketing Services (Details) - $ / shares		12 Months Ended	84 Months Ended
	Oct. 22, 2020	Dec. 31, 2020	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, weighted average exercise price (in dollars per share)		$ 17.045
Options exercisable at the end of the year (in shares)		331,759	331,759
Granted (in shares)		10,933
The 2005 Stock Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)		0	0
The 2013 Omnibus Equity Award Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)		0
Polyrize Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)		10,933
Consultants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options for shares of common stock (in shares)		11,200
Options exercisable at the end of the year (in shares)		11,200	11,200
Consultants | The 2005 Stock Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)		0
Consultants | The 2013 Omnibus Equity Award Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)		0
Consultants | Polyrize Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	2,494	605
August 2013 | Consultants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options for shares of common stock (in shares)		2,500
Granted, weighted average exercise price (in dollars per share)		$ 21.140
Options exercisable at the end of the year (in shares)		2,500	2,500
Exercisable through		August 2023
March 2014 | Consultants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options for shares of common stock (in shares)		1,650
Granted, weighted average exercise price (in dollars per share)		$ 39.860
Options exercisable at the end of the year (in shares)		1,650	1,650
Exercisable through		March 2024
May 2014 | Consultants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options for shares of common stock (in shares)		2,000
Granted, weighted average exercise price (in dollars per share)		$ 22.010
Options exercisable at the end of the year (in shares)		2,000	2,000
Exercisable through		May 2024
November 2014 | Consultants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options for shares of common stock (in shares)		3,445
Granted, weighted average exercise price (in dollars per share)		$ 21.660
Options exercisable at the end of the year (in shares)		3,445	3,445
Exercisable through		November 2024
February 2016 | Consultants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options for shares of common stock (in shares)		1,000
Granted, weighted average exercise price (in dollars per share)		$ 16.870
Options exercisable at the end of the year (in shares)		1,000	1,000
Exercisable through		February 2026
October 2019 | Consultants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options for shares of common stock (in shares)		393
Granted, weighted average exercise price (in dollars per share)		$ 17.045
Options exercisable at the end of the year (in shares)		393	393
Exercisable through		October 2029
May 2020 | Consultants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options for shares of common stock (in shares)		212
Granted, weighted average exercise price (in dollars per share)		$ 17.045
Options exercisable at the end of the year (in shares)		212	212
Exercisable through		May 2030